Trade Accounts Receivable, Net - Changes in Allowance for Expected Credit Losses (Details) - Trade receivables - MXN ($) $ in Millions	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Increase (decrease) in financial assets [abstract]
Balance at the beginning of the period	$ 2,535	$ 2,238	$ 1,951
Allowance for the period	1,176	1,367	1,060
Additions (write-offs) of uncollectible accounts	(831)	(557)	(945)
Addition from business combinations	69	3	166
Effects of changes in foreign exchange rates	99	(26)	6
Disposal of businesses	(69)	(490)	0
Balance at the end of the period	2,979	$ 2,535	$ 2,238
Health Division
Increase (decrease) in financial assets [abstract]
Additions (write-offs) of uncollectible accounts	$ (506)

The decrease in financial assets resulting from derecognition. [Refer: Financial assets]

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The decrease in financial assets resulting from write-off. [Refer: Financial assets]

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The amount of assets that are: (a) cash; (b) an equity instrument of another entity; (c) a contractual right: (i) to receive cash or another financial asset from another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially favourable to the entity; or (d) a contract that will, or may be, settled in the entity’s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to receive a variable number of the entity’s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity’s own equity instruments. For this purpose the entity’s own equity instruments do not include puttable financial instruments classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity’s own equity instruments. [Refer: Classes of financial instruments [domain]; Financial liabilities]

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The increase (decrease) in financial assets resulting from changes in models or risk parameters. [Refer: Financial assets]

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The increase (decrease) in financial assets resulting from foreign exchange. [Refer: Financial assets]

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The increase in financial assets resulting from origination or purchase. [Refer: Financial assets]

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